Some Basic Concepts Of Chemistry Question 324

Question: The number of moles of sodium oxide in $ 620g $ of it is [BHU 1992]

Options:

A) 1 mol

B) 10 moles

C) 18 moles

D) 100 moles

Show Answer

Answer:

Correct Answer: B

Solution:

Sodium oxide $ \to $ $ Na _2O $

Molecular weight = 46 +16 = 62 62gm of $ Na _2O $ = 1 mole 620gm of $ Na _2O $ = 10 mole.



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